1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fgiga [73]
3 years ago
14

Find the x-intercepts of the parabola with vertex (-7,45)

Mathematics
1 answer:
REY [17]3 years ago
3 0
Use the vertex form,
y=a(x-h)^2+ky=a(x+7)^2+45
<span>Use the y-intercept to solve for a</span>-200=a(0+7)^2+45
49a+45=-20049a=-245a=-5



You might be interested in
Choose the expression that represents a cubic expression.
Anna007 [38]

Answer:

10x³ - 6x² - 9x + 12 is a cubic expression ⇒ 2nd

6x + 6 is a linear expression ⇒ 1st

5x² + 9x - 1 is a quadratic expression ⇒ 2nd

Quadratic expression ⇒ 1st

Step-by-step explanation:

* Lets explain the degree of any expression

- The degree of any expression is the greatest power of the variable

- Ex:

# 3x - 3 is a first degree expression

# x² - 3x + 2  is a second degree expression

# 5x³ - 2x² + 5x - 2 is a third degree expression

- The first degree expression is called linear expression

- The second degree expression is called quadratic expression

- The third degree expression is called cubic expression

* Lets solve the problem

∵ The cubic expression is the expression with greatest power of 3

∴ 10x³ - 6x² - 9x + 12 is the cubic expression

∵ The linear expression is the expression with greatest power of 1

∴ 6x + 6 is a linear expression

∵ The quadratic expression is the expression with greatest power of 2

∴ 5x² + 9x - 1 is a quadratic expression

∵ The expression is -2x² + 11

∵ The greatest power of x is 2

∴ -2x² + 11 is a quadratic expression

3 0
3 years ago
Read 2 more answers
Answer please!!!<br> Order these from least to greatest: <br> -2/5, -0.35, -5/8, -0.375
horrorfan [7]
58, -25, -0.375, -0.35

5 0
2 years ago
Read 2 more answers
A biologist is studying the elk population in a county park. She starts with only 2 elk and observes that the number of elk trip
DochEvi [55]

Answer:

The expression that represents the population of elk is: \text{elk}(t) = 2*3^t. It'll take 6 years for the population to reach 1,458 individuals.

Step-by-step explanation:

Since the number of elks triples every year and starts at \text{elk}(0) = 2, then after the first year the population will be:

\text{elk}(1) = \text{elk}(0)*3 = 2*3

While on the second year, it'll be:

\text{elk}(2) = \text{elk}(1)*3 = 2*3*3 = 2*3^2

On the third year:

\text{elk}(3) = \text{elk}(2)*3 = 2*3^2*3 = 2*3^3

And so on, therefore the expression that describes the population of elk as the years passes is:

\text{elk}(t) = 2*3^t

If we want to know the number of years until the population reach 1,458 elk, we need to apply this value to the left side of the equation and solve for t.

1458 = 2*3^t\\3^t = \frac{1458}{2}\\3^t = 729\\ln(3^t) = ln(729)\\t*ln(3) = ln(729)\\t = \frac{ln(729)}{ln(3)} = 6

The population will reach 1,458 elk in 6 years.

8 0
3 years ago
Use the triangle below to write the given ratios.<br> • sin(P) = <br>tan(T) = <br>cos(T) =​
Sati [7]

Answer:

.

Explaining:

The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan). These are defined for acute angle.

In these definitions, the terms opposite, adjacent, and hypotenuse refer to the lengths of the sides.

3 0
2 years ago
What is the equation of this circle in general form?
jekas [21]

Answer:

The answer is B

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Ken drew a pair of intersecting rays and marked the angle between them. . . Which of these statements best compares the pair of
    6·1 answer
  • Predict the number of roses in a garden with 16 sunflowers if there are 3 sunflowers in a garden with 81 roses.
    15·2 answers
  • 100 is 86% of what number
    11·1 answer
  • A Tv show had 3.5x10 to the 6th power viewers for their first episode and 8.5x10 to the 6th power viewers for their second episo
    6·1 answer
  • PRE CALC HELP PLEASE!!
    9·1 answer
  • Solve for x.<br> x² = 36<br> A)+36<br> B)+6<br> C)+3<br> D)36
    15·1 answer
  • Mr. Garcia notes that in 84% of the papers his former students have turned in, they cited their sources incorrectly. He plans to
    7·1 answer
  • Pls help due today I will Give crown
    15·1 answer
  • The cost of K-12 education per student was $2200 in 1978 and increased to $10,300 in 2008. (Source: Department of Education). (a
    5·1 answer
  • . Using the pattern above, what is the
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!